| abstract |
[PROBLEMS] To be used for fresh food such as meat, fish, vegetables, etc., it is easy to grasp the state of contents (food) by using a transparent material as a whole, and it is possible to efficiently check the timing of eating. Provided is a freshness maintaining seal having transparency. An ultrafine antibacterial ceramic having a particle size of 5 μm or less and fired at a ratio of 50 to 70% by weight of silicon carbide or silicon oxide, 15 to 25% by weight of aluminum oxide, and 5 to 10% by weight of titanium oxide. It is characterized in that at least one side of a transparent film is coated with a coating agent in which powder is mixed with an acrylic resin coating agent in a weight ratio of 3 to 10%. |